#!/bin/bash

ORDNER="$1"
test -d "$ORDNER" || exit

cd "$ORDNER"
LISTE=$( for datei in $( find . -maxdepth 1 -type f ); do
  stat -c %u $datei
done | sort -nu | tr "\n" ","
)
LISTE=${LISTE%,}
printf "Owners(%s) = %s\n" $ORDNER $LISTE